how to fix P0700 transmission code on BMW 5 Series F10/F11 (2010-2017)

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Disconnect the vehicle's battery to ensure safety while working on electrical components.

Tools Required:

• OBD-II scanner
• Socket set
• Torque wrench
• Multimeter
• Transmission fluid pump
• Basic hand tools

2. Inspect and Replace Transmission Fluid

• Sub-steps:
  1. Locate the transmission fluid dipstick and remove it to check the fluid level.
  2. If fluid is low, use a transmission fluid pump to add the correct type of ATF (refer to owner's manual for specifications).
  3. If the fluid is dark or burnt, drain the transmission fluid completely and replace it.
  4. Replace the transmission filter if applicable.

3. Repair Wiring and Connectors

• Sub-steps:
  1. Visually inspect the wiring harness leading to the TCM for any signs of wear or damage.
  2. Use a multimeter to check for continuity and proper voltage at the TCM connector.
  3. Repair or replace any damaged wires or connectors as necessary.
  4. Ensure all connections are secured and free from corrosion.

4. Replace Transmission Control Module (if necessary)

• Sub-steps:
  1. If the TCM is suspected to be faulty, locate it (usually under the driver's side dashboard).
  2. Disconnect the electrical connector from the TCM.
  3. Remove the TCM from its mounting bracket.
  4. Install the new TCM and reconnect the electrical connector.
  5. Ensure it is properly secured in place.

5. Reconnect Battery and Clear Codes

• Sub-steps:
  1. Reconnect the vehicle's battery.
  2. Use the OBD-II scanner to clear any stored codes.
  3. Start the engine and ensure there are no warning lights on the dashboard.